The Light of Wisdom Vol. IV contains the root terma - hidden treasure text - of Padmasambhava, The Gradual Path of the Wisdom Essence and its commentary The Light of Wisdom by Jamgon Kongtrul the Great. Annotations on the commentary Entering the Path of Wisdom spoken by Jamyang Drakpa and recorded by Jokyab Rinpoche are included as well as clarifications from other masters.